JPS593659A - Virtual library control processing system - Google Patents

Abstract

PURPOSE:To perform fast loading regardless of whether a logical space is usable or not by assuming a virtual library space independent of the normal logical space and exploding a load module in this virtual library. CONSTITUTION:Control intervals CI are given CI numbers corresponding to relative track addresses in a library 1, one to one. A space grasped as a set of the control intervals CI is the virtual library space 4. The contents of the virtual library space 4 are all outputted to an external storage for the library (LIBEPS) 2. The correspondence between respective members of the library 1 and the control intervals CI in the virtual library space is shown by a member table 9. Real pages 8 are allotted in the virtual library space and the fast loading of the load module is possible.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a virtual two-library management processing method, particularly a two-library management processing method in which load modules to be loaded by a data processing system are stored. Consider the concept of a virtual library space as a collection of control intervals that organize the contents of a library in track units. This invention relates to a virtual library management processing method that enables high-speed loading of four-door modules.

(2) Technical Background and Problems Quad modules are generally stored and managed in libraries organized into partitioned datasets. The segmented data seven bits consist of a directory part and a member part.
The contents of the load module are stored in each member of the member section, and unresolved addresses are set when loading the load module stored in the library into the main memory, even if it is searched by the directory information of the directory section. etc., it is necessary to rewrite it into an executable format. Load modules include so-called reusable or end-run load modules, and non-reusable load modules whose contents change once they are used and cannot be used again. In other categories, there are resident load modules that occupy logical space without being unloaded once loaded, and non-resident load modules that require loading every time.

As for the resident load module, control can be immediately transferred and used without loading it when necessary. Therefore, although there is no problem in terms of processing speed, since it occupies logical space, there is a big restriction on logical space allocation for other load modules that operate in the same logical space. Each time it is necessary, the data must be input and loaded from a library provided on an external storage device such as a magnetic disk drive, which poses a problem in that the processing time required for loading is long. It goes without saying that it is meaningless to make a non-reusable load module resident in an executable format in memory. (3) Purpose and structure of the invention The present invention aims to solve the above problems. , the purpose is to enable high-speed loading without compressing logical space and regardless of whether it is reusable or not.

To achieve this objective, the present invention assumes a virtual library space that is independent of the normal logical space, deploys load modules in the virtual library space, allocates real pages to the virtual library space as necessary, and It focuses on making it possible to map real pages to specified logical spaces. That is, the virtual library management processing method of the present invention is a library management processing method in which a load module consisting of a group of instructions loaded onto main memory and executed by a data processing device is stored for each member. A virtual library space is provided which is made up of a set of control intervals consisting of records of a predetermined size and their control information, and the contents of the virtual library space are stored in correspondence with the numbers assigned to each control interval. a control interval number (row) to be page-ined from the external storage device, and allocates the control interval real page corresponding to at least the specified member to the control interval specified by 1 m. The present invention is characterized in that it includes a control interval acquisition processing section that allocates the real page to a specified logical space by updating a page table.Examples will be described below with reference to the drawings.

(4) Embodiment of the invention FIG. 1 shows the configuration of an embodiment of the invention, FIG. 2 is a configuration diagram of a control interval, FIG. 3 is an explanatory diagram of the correspondence between the virtual library space and external storage for the library, and The figure is an explanatory diagram of the member table, Fig. 5 is an explanatory diagram of the CI table, Fig. 6 is an explanatory diagram of the processing of the initial setting processing section, Fig. 7 is an explanatory diagram of the processing of the loading processing section, and Fig. 8 is an illustration of the CILOAD processing. FIG. 9 is an explanatory diagram of the processing of the CIGET processing section.

In the figure, 1 is the library, 2 is the external storage for the library (L
IBEPS), 3-0.3-1. ... is a slot, 4 is a virtual library space, 5-0.5-1, ... is a control interval (CI), 6U logical space, 7 is a window, 8 is a real page, 9 is a member table, 10
is a CI table, 11 is a page table, 12 is a data processing unit, 13 is an initial setting processing unit, 14 is a loading processing unit, 15 is a FiCILOAD processing unit, 16 is a CI
The GET processing unit 17 represents a CI FREE processing unit.

The library l is a conventionally existing data set, for example, partitioned and organized, in which load modules are stored in each menu (-.The load module name matches the member name or is associated with the O library. A control interval (CI) of 5-0.5-1... is created for all tracks in the 1st part.
It consists of a format as shown in the figure, with a text part and C
It consists of a TL section, a CIDF section, etc. The text part is a text record in which the instruction code of the load module is stored, and the CTL part is a control record,
Load module control information is stored. Also, CI
The DF section is a control interval definition field, in which control information such as each text record length and control record length is stored and managed. The space that is grasped as a collection of CIs is the virtual library space 4.

The contents of the virtual library space 4 are all output to the library external storage (LI BEPS) 2. In other words, the library external storage 2 stores the contents of the library 1 in the form of the control interval CI, rather than organizing the contents in sections. It can be said that it is maintained and managed by For example, if the data processing system manages pages with a size of 4096 bytes per page, which is the unit of memory allocation, the external memory for library 2 also has a size of 4096 bytes.
Byte size of each slot) 3-0.3-1. It will be managed by classifying it into...

By the way, the control interval CI is set to be exactly an integral multiple of the page size of 4096 bytes, and therefore, a plurality of slots of the external storage for library 2 correspond to one control interval CI. This correspondence relationship is, for example, as shown in FIG. In Figure 3, one control interval 5-0 etc.
Z, the relationship between the virtual library space 4 and the library external storage 2 stored corresponding to the four slots 3-0 to 3-3, etc. is the logical space and external storage in the well-known virtual storage system. You can think of it as having a similar relationship to page datasets.

The correspondence between each member of the library 1 and the control interval CI on the virtual library space 4 is shown by a member table 9.

The member table 9 is configured, for example, as shown in FIG. 4, and has correspondence information set between each member name and the CIi number of the control interval occupied by that member.

Further, information indicating whether each member resides in the real memory or not is set, and in FIG. 4, rV=VJ indicates non-resident, and rV=RJ indicates resident.

Just as real pages on the main memory are allocated to logical spaces in the virtual storage system, real pages 8 are allocated to the control interval CI of the virtual live space 4 as needed. Since the allocation of 80 real pages is performed for each control interval CI, for example, 4 pages are allocated to one control interval CI. When the real page 8 is newly allocated, the contents of the corresponding slot in the external library storage 2 are transferred. Note that this transfer can be executed with c1 input/output commands for four slots, so it can be processed efficiently.

The correspondence between the virtual library space 4 and the real pages 8 is shown by the CI table 10. The oCI table 10 is configured as shown in the figure, for example, and has four real pages allocated corresponding to each CI number. A number is set for each. In Fig. 5, the part represented by the real page number "X" indicates a part to which no real page is allocated.0 Also, rV=RJ is the memory resident control interval Q, and rV=VJ is the part where the real page is not allocated. 0 indicates a non-resident control interval. Furthermore, the virtual library space 4
However, even if the real page 8 is allocated, it is independent of the logical space 6 and does not occupy any area on the logical space 6.

When referring to the real page 8 in which the entity of the virtual library space 4 is stored from the logical space 6, the window 7 performed via the window 7 is used to refer to the input/output data 7 for the control interval CI on the logical space 6. You can think of it as something like By specifying the logical address of Window 7 and the CI number and calling the CIGET processing unit 16fiI, the entries in the page-table 11 in Window 70 are updated as described later, and the logic occupied by Window 7 is updated. The space 6 is associated with the real page 8 corresponding to the control interval CI. Therefore, if the real page 8 has already been allocated to the control interval CI in the virtual library space 4, the input from the library external storage 2 is Not only output but also data transfer on the real memory is involved, and it can be referenced from the window 7. The contents of the page table 11 are well known, so their explanation will be omitted.O The initial setting processing unit 13 creates the virtual library space 4.
The zero loading processing unit 14, which is the main component, prepares a load module in an executable format on the memory in response to a load module load request. CILO
The AD processing unit 15 allocates a real page 8 on the control interval CI corresponding to the designated member, and reads the page in from the external memory 2 for the library. C
The IGET processing unit 16 executes a process of allocating the real page allocated to the specified control interval CI to the specified logical space, that is, the window 7. If a real page is not allocated to the specified control interval CI, a real page is allocated,
After page-in from the library external storage 2, the 0CIFREE processing unit 17 that allocates to the window 7 executes processing to return the real page allocated to the control interval CI corresponding to the designated member.

The real page allocated to the virtual library space 4 is, for example, LRU (Least Recent)
d) When there is a shortage of real pages, the real pages allocated to members that are used less frequently are taken away. Therefore, the real pages of members that are used more frequently are less likely to be taken away.

Next, the processing of the initial setting processing section 13 will be explained in detail with reference to FIG. 6. The initial setting processing unit 13 is activated using the library salt of the library 1 as input information. That is, the virtual library space 4 will be created for each library. First, in the process 20 shown in FIG. 6, the directory section of the library 1 is referred to, the required size is calculated, and an area of the library external storage 2 is secured on the direct access volume. Next, in process 21, the members of the library 1 are written to the library external storage 2 track by track. Note that the library external storage 2 is formatted into slots in units of pages. Subsequently, in step 22, a member table 9 as shown in FIG. 4 is created.

rV on the resident directed member, i.e. member table 9
= For the control interval of the members of RJ,
Through process 23, real page 8 on real memory is allocated. A process 24 creates a CI table 10 as shown in FIG. 5, and a process 25 refers to the directory section of the library 1 to determine whether processing for all members has been completed. If there are still unprocessed members, control is returned to process 21 and processes 21 to 24 are repeated in the same way. When the processing is completed for all members, the processing of the initial setting unit 13 is ended.

The loading processing unit 14 performs processing as shown in FIG. 7, for example. The loading processing section 14 specifies the module name for which the load request has been made, calls the CILOAD processing section 15 through the process 30 shown in FIG. A window 7 having the size of the control interval CI is secured in the space 6. In process 32, the CI GET processing unit 16 is called by specifying the CI number '4 of the control interval corresponding to the member and the logical address of the window 7. The control interval CI record can now be referenced via window 7. Subsequently, in process 33, the record of the window 7 is processed to generate an executable load module in the logical space 6. For this generation process, the conventional processing mechanism can be used as is. In process 34, it is determined whether the processing for all control interval CIs of the specified module has been completed, and if the processing has not been completed, for the next control interval CI,
Similarly, processing 32 and processing 33 are repeated. When the process is completed, the window 7f is released by processing 35, and the CIFREE processing unit 17 is released by processing 36 as necessary.
The CILOAD processing unit 15 calls the real page of the non-resident control interval CI that is no longer needed, and ends the loading process, for example, as shown in FIG. Then, by the process 40 shown in FIG.
Search Table 9 to obtain the CI number of the control interval corresponding to the member of the specified module.

Next, in step 41, the CI table 10 is searched based on this CI number. Then, in process 42, it is determined whether the real page 8 has already been allocated to the currently targeted control interval CI.

If allocated, control is passed to process 46.

In the case of unallocated data, for example, 4 pages of real page 8 are secured in process 43, and the content of the corresponding control interval CI is stored in the real page 8 from library external storage 2 in process 44. Load. and,
Through process 45, the assigned real page number is set in the entry for the CI number in the CI table 10. Processing 4
6, it is checked whether processing has been completed for all controller /L/ interval CIs of the specified module, and if it has not been completed, the process returns to step 41 and the real page allocation processing is repeated in the same way.

When everything is finished, control is returned to the caller.

The CIGET processing unit 16 performs processing as shown in FIG. 9, for example. First, in process 50, the CI table 10 is searched based on the specified CI number, and with reference to the searched CI table 10, in process 51, the real page is stored in the control interval CI having the CI number. Determining whether CILOA is allocated
If the CIGET processing unit 16 is called immediately after the processing by the D processing unit 15, it means that the real page has been allocated, but if not, the real page is returned by the LRU method. Sometimes there are. If a real page is allocated, control is transferred to process 55. If not allocated, real page 8 is secured in process 52, and in process 53, a library external memory [2 color control interval CI Then, in step 54, a real page number is set in the entry of the CI number in the CI table 10. Next, in process 55, the entry in the page table 11 corresponding to the logical address of the specified window 7 is updated so that the entry points to the real page 8 where the contents of the specified control interval CI have been set. , and maps the window 7 to the above real page 8. In this way, the control interval CI can be referenced via the window 7, and control is returned to the caller.

(5) As described in detail, according to the present invention, when real pages are allocated in the virtual library space, high-speed loading of load modules is possible, especially in systems where real memory exists in large quantities. , the effect is great. Note that even if a real page is allocated to the virtual library space, if the corresponding load module is not used, it will not occupy the logical space and will not put pressure on the logical space. Further, even if no actual pages are allocated to the virtual library space, efficient input processing can be performed, for example, in track units from external storage.

[Brief explanation of the drawing]

Figure 1 shows the configuration of an embodiment of the present invention, Figure 2 shows the configuration of the control interval, Figure 3 is an explanatory diagram of the correspondence between the virtual library space and external storage for libraries, and Figure M4 is an explanatory diagram of the member table. , Fig. 5 is an explanatory diagram of the CI table, Fig. 6 is an explanatory diagram of the processing of the initial setting processing section, Fig. 7 is an explanatory diagram of the processing of the rope ink processing section, and Fig. 8 is an explanatory diagram of the CI LOA.
FIG. 9 is an explanatory diagram of the processing of the D processing section, and FIG. 9 is an explanatory diagram of the processing of the CIGET processing section. In the figure, 1 is a library, 2 is an external storage for the library,
4 is a virtual library space, 6 is a logical space, 7 is a bind, 8 is a real page, 9 is a member table, IO is a CI table, 11 is a page table, 12 is a data processing device, 13 is an initial setting processing unit, Reference numeral 14 represents a loading processing section, 15 a CI LOAD processing section, 16 a CIGET processing section, and 17 a CI FREE processing section. Patent applicant Mori 1) Hiroshi (1 other person) Sai 2 Figure I Figure 4

Claims (1)

[Claims] In a management processing method for a library in which a load module consisting of a group of instructions loaded onto the main memory and executed by a data processing device is stored for each member, records of a predetermined size of the library and their control information are a virtual library space consisting of a set of control intervals, and an external storage device in which the contents of the virtual library space are stored in correspondence with the numbers assigned to each control interval;
At least a control interval load processing unit that allocates a real page to a control interval corresponding to a specified control interval, loads a page from an external storage device, and transfers a real page allocated to a specified control interval to a page. - A virtual library management processing method characterized by comprising a control interval acquisition processing unit that allocates to a specified logical space by updating a table.